You know how people say personality doesn't matter?
It's a lie. Even chads will get denied if they aren't down with being the kinda guy a girl wants to fuck.
Remember, if girls are all sharing attractive guys anyway and don't mind, what's one less attractive guy not getting laid? Sure he'll find someone who's not a looks match pretty easy. The hot girls he actually wants will double up on someone who eats pussy before they go without. Personality matters because girls can fuck whoever they want thanks to the internet and it's ability to network people.